Across
- 3. a series of food chains meshed together
- 5. where all living things are located
- 6. procedure of identifying a potential answer to a problem or question
- 9. where fossil fuels are held under the Earth
- 12. basic, raw or physical good that can be bought, sold or traded
- 13. carbon-rich energy sources, considered non-renewable, found within the earth
- 16. organisms that produce their own food
- 18. factor that is intentionally changed or manipulated
- 25. Nitrogen formed into nitrites and nitrates
- 26. gases between Earth's surface and space
- 28. breakdown of plants or animals into ammonia
- 30. naturally enrich the soil by returning nitrogen, beans
- 32. educated guess
- 33. Atmospheric nitrogen placed into the soil to be used by plants
- 34. large naturally occuring habitat with floral and fauna
- 35. eats only plants
Down
- 1. known as nature's recyclers
- 2. geographical area where living organisms interact with non-living organisms
- 4. molecule broken apart by light absorption
- 7. by-products include sugar or glucose and oxygen
- 8. factor measured based on the change
- 10. organisms that cannot produce their own food
- 11. baseline that does not receive the experiment
- 14. raw, processed, facts
- 15. eats both plants and animals
- 17. specific position of an animal or plant in a food chain based on how it obtains its energy
- 19. a linear sequence of organisms in an ecosystem that describe energy transfer from consumption
- 20. bacteria reduce nitrogen in the soil and release nitrogen back to the atmosphere
- 21. animal feeds on dead plants and animals
- 22. the use of ammonia in the soil by plants
- 23. eats only other meat sources
- 24. natural environment where an animal lives, feeds, and reproduces
- 27. taking in oxygen and releasing carbon dioxide
- 29. holding place, specifically of atmospheric gases
- 31. accounts for all water on the Earth's surface